Chimbu Warrior takes the points.................bloody good effort considering it is the only one on the Aus register. It's a 1946 ERCO 415-D. There is a Forney Aircoupe somewhere around, but it's a much later model.
The ERCOupe has dual fins (VERTICAL no less gsf
), no rudder pedals (linked to ailerons) and a single brake pedal:
That leaves the Nanchang CJ-6A (9 cyl radial, full dual controls).
Well done. If I did not own the plane I'd never have worked it out.